Increase of Atmospheric Methane Recorded in Antarctic Ice Core

Science  27 Sep 1985:
Vol. 229, Issue 4720, pp. 1386-1388
DOI: 10.1126/science.229.4720.1386


Air entrapped in bubbles of cold ice has essentially the same composition as that of the atmosphere at the time of bubble formation. Measurements of the methane concentration in air extracted by two different methods from ice samples from Siple Station in western Antarcitica allow the reconstruction of the history of the increase of the atmospheric methane during the past 200 years.